Note 5 - Investments and Advances in Real Estate Joint Ventures (Detail) - Joint Venture Investments Accounted For Under The Equity Method - Investment Details (Prior Period) (USD $)	9 Months Ended
	Sep. 30, 2010		Dec. 31, 2010
Number of Properties			689
Gross Investment In Real Estate			$ 13,554,700,000
The Company's Investment			1,382,700,000
The Company's Share of Income/(Loss)	27,717,000
KimPru and KimPru II [Member]
Average Ownership Interest			15.00%	[1],[2]
Number of Properties			65	[1],[2]
Gross Investment In Real Estate			2,915,100,000	[1],[2]
The Company's Investment			145,300,000	[1],[2]
The Company's Share of Income/(Loss)	(16,700,000)	[1],[2]
KIR [Member]
Average Ownership Interest			45.00%	[1]
Number of Properties			59	[1]
Gross Investment In Real Estate			1,546,600,000	[1]
The Company's Investment			156,100,000	[1]
The Company's Share of Income/(Loss)	13,400,000	[1]
UBS Programs [Member]
Average Ownership Interest			17.90%	[1],[3]
Number of Properties			43	[1]
Gross Investment In Real Estate			1,366,600,000	[1]
The Company's Investment			68,300,000	[1]
The Company's Share of Income/(Loss)	800,000	[1]
BIG Shopping Centers [Member]
Average Ownership Interest			36.50%	[1],[3]
Number of Properties			22	[1]
Gross Investment In Real Estate			507,200,000	[1]
The Company's Investment			42,400,000	[1]
The Company's Share of Income/(Loss)	(700,000)	[1]
CPP [Member]
Average Ownership Interest			55.00%	[1]
Number of Properties			5	[1]
Gross Investment In Real Estate			378,100,000	[1]
The Company's Investment			115,100,000	[1]
The Company's Share of Income/(Loss)	1,800,000	[1]
Kimco Income Fund [Member]
Average Ownership Interest			15.20%	[1]
Number of Properties			12	[1]
Gross Investment In Real Estate			281,700,000	[1]
The Company's Investment			12,400,000	[1]
The Company's Share of Income/(Loss)	700,000	[1]
SEB Immobilien [Member]
Average Ownership Interest			15.00%	[1]
Number of Properties			11	[1]
Gross Investment In Real Estate			300,100,000	[1]
The Company's Investment			3,400,000	[1]
The Company's Share of Income/(Loss)	800,000	[1]
Other Institutional Programs [Member]
Average Ownership Interest				[1]
Number of Properties			68	[1]
Gross Investment In Real Estate			838,100,000	[1]
The Company's Investment			35,100,000	[1]
The Company's Share of Income/(Loss)	(100,000)	[1]
RioCan [Member]
Average Ownership Interest			50.00%
Number of Properties			45
Gross Investment In Real Estate			1,380,700,000
The Company's Investment			61,500,000
The Company's Share of Income/(Loss)	13,900,000
Intown [Member]
Number of Properties			138	[4]
Gross Investment In Real Estate			820,100,000	[4]
The Company's Investment			99,400,000	[4]
The Company's Share of Income/(Loss)	(4,800,000)	[4]
Latin America [Member]
Number of Properties			130
Gross Investment In Real Estate			1,191,100,000
The Company's Investment			344,800,000
The Company's Share of Income/(Loss)	8,700,000
Other Joint Venture Programs [Member]
Number of Properties			91
Gross Investment In Real Estate			2,029,300,000
The Company's Investment			298,900,000
The Company's Share of Income/(Loss)	$ 9,900,000

[1] The Company manages these joint venture investments and, where applicable, earns acquisition fees, leasing commissions, property management fees, assets management fees and construction management fees.

[2] This venture represents four separate joint ventures, with four separate accounts managed by Prudential Real Estate Investors ("PREI"), three of these ventures are collectively referred to as KimPru and the remaining venture is referred to as KimPru II.

[3] Ownership % is a blended rate

[4] The Company's share of this investment is subject to fluctuation and is dependent upon property cash flows.